Coir Pith material is compressed at a 5:1 ratio by a hydraulic pressing machine to produce Seedling Coins, which expands up to 4 times its size. Seedling coins are mostly used in nurseries for seed germination purposes. Coir is the most wanted product for seed germination, it gives better root growth in a short period. Coir disc/coins are 100% biodegradable. so seedling planted directly into the soil or any other growing medium has fewer transplant shock problem. Coir Seed Germination Coins are available in the following sizes 35 mm Round (with/without non-woven cloth) 45 mm Round (with/without non-woven cloth) Coir Pith Discs are available in the below sizes: